rust/src/test/compile-fail/drop-with-active-borrows-1.rs

// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

fn main() {
    let a = "".to_string();
    let b: Vec<&str> = a.lines().collect();
    drop(a);    //~ ERROR cannot move out of `a` because it is borrowed
    for s in &b {
        println!("{}", *s);
    }
}